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Issue 40, 2014
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Synthesis of ferromagnetic cobalt nanoparticle tipped CdSe@CdS nanorods: critical role of Pt-activation

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Abstract

The synthesis of a ferromagnetic heterostructured material consisting of a CdSe@CdS nanorod attached to a single dipolar cobalt nanoparticle (CoNP) into a “matchstick” morphology is reported. CdSe@CdS nanorods were modified by an activation reaction with Pt(acac)2 which enabled selective one-sided deposition of a dipolar metallic CoNP-tip via the thermolysis of Co2(CO)8 in the presence of polystyrene ligands. Small (<2 nm) PtNP-tips on CdSe@CdS nanorods were found to be responsible for the selective deposition of CoNP-tips onto one terminus per nanorod. The influence of the Pt-activation step for cobalt tipping was investigated by examination of numerous conditions and characterization of intermediates and materials using transmission electron microscopy and synchrotron X-ray diffraction.

Graphical abstract: Synthesis of ferromagnetic cobalt nanoparticle tipped CdSe@CdS nanorods: critical role of Pt-activation

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Supplementary files

Article information


Submitted
01 Apr 2014
Accepted
09 May 2014
First published
12 May 2014

This article is Open Access

CrystEngComm, 2014,16, 9461-9468
Article type
Paper
Author version available

Synthesis of ferromagnetic cobalt nanoparticle tipped CdSe@CdS nanorods: critical role of Pt-activation

L. J. Hill, N. E. Richey, Y. Sung, P. T. Dirlam, J. J. Griebel, I. Shim, N. Pinna, M. Willinger, W. Vogel, K. Char and J. Pyun, CrystEngComm, 2014, 16, 9461
DOI: 10.1039/C4CE00680A

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